Okay...once I get everything in my car fixed up...just learned my head gasket has a crack in it...lots of oil everywhere *Yay!* I've been working on this ported box I will build when I have the time and money, It's too fit around a wheel well in my car. The total space is 52x 12.5 x 12 *shaved 2 inches off depth and width...so the box is 50 x 12.5 x 10, front piece; the back piece is 36 x 12.5 x 16. Shave off a few inches... so 34 x 12.5 x 10 for the back piece.